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6 pages in length. Technological advancement has changed the very foundation upon which mankind lives; while some of this tremendous progress is questionable in nature, the vast majority has allowed for significantly more convenience, speed and result. DNA testing within forensic science is one of the most important examples of how technology has enabled law enforcement officials to identify criminals much more accurately and in much less time. Bibliography lists 9 sources.
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significantly more convenience, speed and result. DNA testing within forensic science is one of the most important examples of how technology has enabled law enforcement officials to identify criminals
much more accurately and in much less time. The extent to which DNA testing has evolved over time with regard to forensics today is both grand and far-reaching; that
DNA testing now provides for the following identifications speaks to the manner by which forensics investigators finally have the upper hand over criminal detection: * Identify potential suspects whose
DNA may match evidence left at crime scenes * Exonerate persons wrongly accused of crimes * Identify crime and catastrophe victims * Establish paternity and other family
relationships (Human Genome Project, 2004). Some of the DNA techniques used in forensic investigations include Restriction Fragment Length Polymorphism (RFLP), which analyzes DNAs variable fragment lengths.
Ingesting an enzyme - restriction endonuclease - responsible for determining these lengths allows investigators to identify certain variations that occur. Because the presence of dirt, mold or other
environmental factors can significant distort a correct sample, RFLP is used more infrequently today. As well, the necessary size sample required for RFLP is no smaller than a quarter,
while with PCR Analysis the sample can be no bigger than a few skin cells. This seemingly insignificant aspect is crucial to investigators who often are not left with
such a DNA sample (National Institute of Justice, 2002). PCR Analysis, which can also be contaminated by environmental factors if not handled properly, makes millions of exact DNA copies.
Short tandem repeat (STR), on the other hand, is utilized for evaluating specific DNA nuclear regions; identified inconsistencies define the uniqueness of any given DNA. When hair, bones or
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